package com.sky.aspect;

import com.sky.annotation.AutoFill;
import com.sky.constant.AutoFillConstant;
import com.sky.context.BaseContext;
import com.sky.enumeration.OperationType;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.stereotype.Component;

import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.time.LocalDateTime;

@Aspect
@Component
@Slf4j
public class AutoFillAspect {

    @Pointcut("execution(* com.sky.mapper.*.*(..)) && @annotation(com.sky.annotation.AutoFill)")
    public void pointcut() {}


    @Before("pointcut()")
    public void before(JoinPoint joinPoint) throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
        log.info("开始进行公共字段的填充....");
        MethodSignature methodSignature = (MethodSignature) joinPoint.getSignature();
        AutoFill autoFill = methodSignature.getMethod().getAnnotation(AutoFill.class);
        OperationType operationType = autoFill.value();

        Object[] args = joinPoint.getArgs();
        Object entity = args[0];

        LocalDateTime localDateTime = LocalDateTime.now();
        Long id = BaseContext.getCurrentId();

        if (operationType == OperationType.INSERT) {
            Method setCreatTime = entity.getClass().getMethod(AutoFillConstant.SET_CREATE_TIME,LocalDateTime.class);
            Method setUpdateTime = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
            Method setCreatUser = entity.getClass().getMethod(AutoFillConstant.SET_CREATE_USER,Long.class);
            Method setUpdateUser = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);

            setCreatTime.invoke(entity,localDateTime);
            setUpdateTime.invoke(entity,localDateTime);
            setCreatUser.invoke(entity,id);
            setUpdateUser.invoke(entity,id);
        }else if (operationType == OperationType.UPDATE) {
            Method setUpdateTime = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_TIME,LocalDateTime.class);
            Method setUpdateUser = entity.getClass().getMethod(AutoFillConstant.SET_UPDATE_USER,Long.class);
            setUpdateTime.invoke(entity,localDateTime);
            setUpdateUser.invoke(entity,id);
        }
    }
}
